本文共 1217 字，大约阅读时间需要 4 分钟。

返回xml的方式

   query("set names utf8");    $result = $pdo->prepare($sql);    $result->execute(array('id'=>$id));    return $result->fetch(PDO::FETCH_ASSOC);}$id = $_GET['id']?? 0;//有返回值if($id){    $user = show($id);    if(empty($user))    {        $user = array("errorno"=>"SN001","errormsg"=>'没有查找到数据！');    }}else{    $user = array("errorno"=>"SN002","errormsg"=>"参数ID错误！");}//print_r($user);/** * *///转换成xmlfunction arrayToXml(array $arr){    $xml = "
   ";    $xml .= "
   
    ";    foreach ($arr as $key=>$value)    {        if(is_array($value))        {            $xml .= "<".$key.">".arrayToXml($value)."
    ";        }        else        {            $xml .= "<".$key.">".$value."
    ";        }    }    $xml .= "
   ";    return $xml;}header("Content-type:text/xml");echo arrayToXml($user);

返回json格式

   query("set names utf8");    $result = $pdo->prepare($sql);    $result->execute(array('id'=>$id));    return $result->fetch(PDO::FETCH_ASSOC);}$id = $_GET['id']?? 0;if($id){    $user = show($id);    if(empty($user))    {        $user = array("errorno"=>"SN001","errormsg"=>'没有查找到数据！');    }}else{    $user = array("errorno"=>"SN002","errormsg"=>"参数ID错误！");}//print_r($user);//返回jsonecho json_encode($user);